Non-state actor. Non-state actors (NSA) are entities that participate or act in international relations. They are organizations with sufficient power to influence and cause a change even though they do not belong to any established institution of a state.
These two would be on the more expensive end of the price spectrum. The cheaper options of purchasing bluefin tuna would be buying a bag of frozen fillets or buying a can of tuna meat that has been cut into chunks. On average, plan on spending anywhere from $15 to $45 per pound at a local fresh fish market.
I've often wondered about this, as the ingredient, labor, and capital costs are all pretty low. Sushi grade fish is on the order of $15-25 per pound retail, perhaps $10-18 wholesale. That's the good stuff like ahi, salmon, hirame.